Right, I ordered one of these kits. I notice it claims to be able to insulate, which means I can stick down the leads of these tiny LEDs without worrying about glue solvent dissolving the enamel coating on the wires! It's one of two recommendations I'm going to try.

I bought some. Came in a nice metal case. I tried it on the cracked from of my optovisor lenses and it worked a treat. Also a tiny moulding in wax. It worked well so when the time comes I'll try it on a model. The only problem is the price for the amount. Still, it proves a point about UV curing glues.